Grading-machine.



E. PRENUERGAST.

GRADING NACWNE.

APPUCATION man NOV. 30, 1912.

Patented Sept 10, 1918.

3 SHEETS-SHEET mm m fn van for faward p/"en ergasz By W 5 d zzzom'vey l EDWARD rnnnpnnensr, or s'r. LOUIS, 'ivrrsso'cfnr.

GRADING-MACHINE Specification of Letters Patent.

Application filed November 30, 1917. Serial No. 204,749.

To all whom it may concern:

uBe itknown that I, EDWARD PRENDER- class, a citizen of the United 'States, and resident of St. Louis and State of Missouri,

have invented certain new and useful Improvements in Grading-Machines, of wh ch the following is a specification containinga full, clear, and exact description, reference being had to the accompanying drawings, forming a part thereof.

. My invention relates to eertalnnew and useful improvements infgrading machines.

and has forits special object the construction of a machine which by one operation or once passing over the surface of the highway, it grades the surface and at the same" time rolls it and makes it ready for the application of material out of which thehighway is to be made.

In the drawings:

tion.

Fig. 2 is an enlarged plan view of the forward portion of my invention, illustrating the manner ofconnecting the grading members together.

Fig. 3 is an enlarged fragmental section taken on a line 3-3 of Fig. 1.

Fig. 4 is an enlarged fragmental taken on a line H of Fig. 1.

Fig. 5 is a view of a king bolt for connecting'the forward end of thegrading members together.

section Fig. 6 is a s1de elevation of my invention.

Fig. 7 is an enlarged top plan view of the bearings for the swivel roller shaft.

Fig. 8 is an enlarged, top plan view of the channel that supports the swivel bearings with hearing removed. I

Fig. 9 is an enlarged side View of a portion of the frame work illustrating the swivel hearings for the shaft of the forward rollers. I Fig. 10 is a sectional view taken on a line 10 1O of Fig. 7, of a portion of one of the swivel bearings. I

i Fig. 11 is a side view of a pivoted arm to which the motive power is attached to operate or pull the machine.

Fig. 12 is a top plan view of the same Fig. 13 is a fragmentary view'of the grad- Figure 1 1s a top plan view of my inven Fig.14 is a Fig. 13.

section on a line i k-1 1 of Fig. 15 is an enlarged top, plan view of the frame work with parts broken away, in which the rear rollers are mounted.

Fig. 16 is an enlarged top .plan view of one corner of-the rear roller frame Work illustrating the connection between said frame work. and one of the side channel beams, and also a top plan view of a drag or leveler secured to one corner of the machine.

Fig. 17 is a fragmentary side elevation of one of the channel beams taken on a line 17'17 of Fig. l6.-

Fig. 18 ,is an enlarged fragmental elevation taken on a line 18-48 of Fig. 16 looking. in 'the direction of the arrows, with channel beams 21 removed.

Fig. 19 is a plan view of one of the stay or T-hars with parts broken away, and

Fig. 20is a plan View of one of the I- beams, these beams being employed for the adjustment of the machine.

Referring to the drawings, 21 indicates channels which form the forward frame work of the machine and to which are securedthe adjustable cutter blades 22. The forward ends of the channels 21 are pivotally connected together by means of hinged inebers 23 and 24. and the king pin 25. Secured to the'channels 2l-are T-bars 26 and 27 the ends of these T-bars are connected to the channels 21 as illustrated in Figs. 13 and 143, wherein the angles 28 are em loyed for'such purpose.

nthe illustrations, F'g. 1, the machine is shown at its'maximum adjustment and if it is desired toadjust the machine or make it narrower in width, so asto not grade Patented Sept. 10, 1918.

and finish as wide asurfaCe, the machine f is attached to operate the machine. Mounted on the channels 21 between the T-hars 26 and 27 are swivel bearings 31 in which is mounted a roller 'shaft'32, and'mounted 0n the roller shaft 32 are a series of rollers 33*" .which are keyed thereto 'inany suitah mechanical manner. v The rollers 33 form the first unit of rollers and are positioned in the forward portion of the machine.

Secured to the rear ends of the channels 21 is a rectangular frame, formed of longitudinal Lbeams 3-l and transverse or end channel beams 35. The longitudinal l-beams 3i and the end channels being connected together as illustrated in Figs. 15 and 1G by means of angles 36 and bolts 37.

, Intermediate of the channel beams 35 are I-beams 38 and 3 Mounted on one'of the end channels 35 and on the I-beam 39 are shaft bearings 40 in which is mounted a roller ,shaft 41, and mounted on the other end. on channel 35 and l-beam 38 are shaft bearings 42 and d3, in which is mounted shaft 44.

Mounted on the shaft a l are a series of rollers 45, and mounted on the shaft 41 are a series of rollers 46. These rollers are mounted on their respective shafts and held in the desired position" thereon by means of set screws, collars or in any suitable mechanical manner.

It will be observed in this connection that the forward set or unit of rollers and the rear set may be varied and are so arranged that the rear set overlaps the forwahd set.

The rollers answer as wheels for'tlie'machine and if desired only one roller may be used in front which will answer as a front wheel, and two rollers used in the rear which will answer as the two rear wheels.

If it is desired to shorten the Width of the rectangular frame in which the series of rear rollers are mounted, I employ shorter Zibeams 47.

By having the machine equipped with different length T-bars such as 26 and 27 and 29 and different length I-beams such as 34 machine may, be

of channel beams hinged together at the forand 47, the width of the varied as desired.

The I-beams 21 and the rear rectangular frame work in.which the rear rollers are mounted constitute the frame work of the machine, and this frame work may be bodily adjusted by using different thickness filler plates 48 under the shaft bearings for the rear rollers, and different thickness plates 49 under the swivel bearings for the front rollers.

In place of bodily adjusting the frame work of the machine, the cutter plates or bars 22 may be adjusted on the angle bars 21. This is accomplished by providing the cutter bars or plates 22 with vertical elongated slots 50 in which is located a bolt 51 screw seated in the angle bars.

Any number- (f cutter plates or cutter bars 22 may be employed on each angle beam, and they may be independently adjusted. In the rear of the cutter plates on each side of the machine are pivoted drags 52. These drags may be made of any form and are bodily ada roller from the path of travel of j ustable on the shafts 53 or the drags may be ,justableby i'neans of a turn buckle 56.

The rod 55 is pivot-ally connected at both ends so as to permit the same to assume different positions corresponding to the adjustment of the drags.

In the operation of the machine, the loose dirt planed off by the machine will accumulate in ridges along the sides of the machine adjacent to the rear end of the cutter bars or plates on each side of the machine, and by the movement of these drags 52 theloose dirt or material may be distributed as desired, depending upon the adjustment of the drags.

By above adjustment of the drags the loose earth piled up by the machine may be distributed in a thin horizontal layer of any thickness, or an inclined layer, or the entire body of loose earth may be distributed away t ie cutter plates As illustrated the drags 52 are made out of channels to which the cutter plates are adjustably secured.

Having fully described what' I claim is:

1. A grading in" I A shaped adjustab 1 cutter blades secured to the fr. me work, a series of rollers mounted in said frame work, means for adjusting the frame work relative to the rollers, a rear rectangular shaped frame work secured to the front R shaped n'iy invention,

'sing a front A, ad ustable frame work, series of rollers mounted in the rectangular frame work overlapping the rollers mounted in the l-i shaped frame work,v

and a pulling arm secured on each side of the A shaped frame work.

2. A grading machine comprising a pan' cutter plates adjustably inountcd on said channel beams, pulling arms pivotally secured to said channel beams, T-bars secured intermediately of the ends of said channel beams, swivel bearings secured to said channel beams, a shaft mountedthereima series of rollers mounted on said shaft, a rectangular frame work secured to the rear ends of the channel beams, roller shafts mounted in said rectangular frame work, series of rollers mo unted on said shafts, and a pivoted drag mounted in the path of travel of the loose material produced by the cutter plates.

3. A grading machine comprising a pair of channel beams hinged together at the forward ends, one projecting beyond the other,

beams, swivel bearings adjustably mountedv forward ends so that they may be adjusted on said channel beams, a shaft mounted therein, a Series of rollers mounted on said shaft, a rectangular frame work secured to the rear ends of the channel beams, roller shafts adjustably mounted in said rectan-' gular frame work, a series of rollers mounted on said shafts, and a pivoted drag mounted in the path of travel of the'loose material produced by the cutter plates.

4:. A grading machine comprising a pair of channel beams hinged together at their relative to each other, one of which projects beyond the other, T-bars connected to said channel beams, a series of rollers mounted between said channel beams and capable of being adjusted thereto, a rectangular frame I connected to the rear ends ofsaid channel beams, adjustable-cutter plates secured to said channel beams, pivoted pulling arms 20 EDWARD PRENDERGAST.

Witnesses:

I S. Prmrrnn v Eowano E. NGAN. 

